AT525298A1 - Power supply equipment, vehicle and vehicle infrastructure - Google Patents

Abstract

Power supply device, vehicle and vehicle infrastructure 5 The invention relates to a power supply device for a vehicle (10), in particular for a commercial vehicle such as an electric bus or an electric truck, with at least one 10 contact head (5) which can be connected to a vehicle (10). and can be brought into contact with a stationary docking device (9) to form an electrical connection. It is proposed that a rolling contact 15 can be formed between the at least one contact head (5) and the docking device (9). This enables the contact head (5) to be guided smoothly in or on the docking device (9).

Description

15

20

25

30

35

202110916

Power supply device, vehicle and

vehicle infrastructure

The invention relates to a power supply device for a vehicle, in particular for a commercial vehicle such as an electric bus or an electric truck, with at least one contact head which can be connected to a vehicle and brought into contact with a stationary docking device to form an electrical connection

is.

Power supply devices with contact heads can be brought into contact with stationary docking devices (e.g. contact hoods of charging stations). Electrical connections between the contact heads and the docking devices result in the contact heads being supplied with electricity. The contact heads are often connected to the roofs of vehicles (e.g. electric buses or trucks) via linkages, as a result of which current can be drawn via the docking devices and power can be supplied to the vehicles via the linkages. As a result, for example, batteries or accumulators of the vehicles can be charged (for example in a bus or truck depot or at a bus stop, etc.).

Connection operations between the contact heads and the docking devices can be due to sliding contacts

lead to wear.

From the prior art, for example, DE 10 2012 202 955 A1 is known, which shows a charging current collector via which an energy store of an electric vehicle can be charged using current transmitted from a stationary charging station. A platform with electrical contacts is coupled to a pantograph linkage. The

Pantograph linkage is connected to the vehicle.

1

15

20

25

30

35

202110916

However, DE 10 2012 202 955 A1 does not show how an electrical contact is formed between the platform and a charging station or how the platform is used for this purpose

needs to be aligned.

The invention is based on the object of specifying a power supply device which has been developed further compared to the prior art and which enables particularly low-wear contacting of a docking device

allows a contact head.

According to the invention, this object is achieved with a power supply device according to claim 1, in which a rolling contact can be formed between the at least one contact head and the docking device.

This enables the contact head to be guided smoothly in or on the docking device of a power transmission device (e.g. a charging station). A sliding of components of the contact head and the docking device against each other is avoided. There is no need for linear guides to be heated. An automatic compensation of misalignments of the contact head is effected, as a result of which a precise alignment of the contact head in or on the docking device and reliable electrical contacting of the docking device by the contact head are achieved. It's a long lifespan

the power supply device according to the invention can be expected.

Advantageous configurations of the power supply device according to the invention result from the

dependent claims.

It is favorable if a contact head rolling device is rotatably connected to the at least one contact head and can be brought into contact with the docking device, the contact head rolling device having at least two rollers or

has at least two rollers.

2

15

20

25

30

35

202110916

As a result of this measure, a rolling device in or on the docking device can be dispensed with and a simple, robust and weather-resistant solution with regard to the rolling contact is achieved. In addition, the presence of more than one roller or roller makes it easier for the contact head to come into contact with the docking device, which is possible coming from different directions and, for example, also at an angle. misalignments of

Contact head can thus be effectively compensated.

An advantageous solution is achieved when a first roller or a first roller is arranged on a first flank of the at least one contact head and a second roller or a second roller is arranged on a second flank of the at least one contact head opposite the first flank.

As a result, for example, an upper side of the contact head remains free for first electrical contacts, which can make contact with second electrical contacts of the docking device. There are no special recesses in the docking device required, which must accommodate the rollers or rollers to reduce a distance between the contact head and the docking device or an electrical contact between the contact head and the

Allow docking device.

However, it can also be helpful if a docking rolling device, with which the at least one contact head can be brought into contact, is rotatably connected to the docking device.

The docking roller device can, for example, comprise rollers with which the docking device is equipped or lined in the contact area with the contact head, the rollers being able to be lined up, e.g. similar to a conveyor belt. This ensures smooth unrolling of the

Contact head promoted in or on the docking device.

3

15

20

25

30

35

202110916

A precise coupling between the contact head and the docking device is made possible when the docking device as a contact hood, in which the at least one contact head

is insertable, is formed.

A preferred solution is achieved if a spring device, via which the at least one contact head can be connected to the vehicle, is connected to the at least one contact head.

In this context, it can be advantageous, for example for reasons of space, if the spring device is connected to an underside or an upper side of the at least one contact head.

In addition or as an alternative, it can be provided that the spring device is connected laterally to the at least one contact head.

These measures promote compensation for misalignments between the contact head and the docking device. Due to spring forces of the spring device, the contact head can move independently into a position in or on the docking device that is favorable for current collection. In addition, the spring device provides mechanical stabilization of the contact head.

If it is not necessary to compensate for translational misalignments between the contact head and the docking device, a simple and robust solution can also be achieved if the at least one contact head has a receptacle for a ball joint, via which the at least one contact head can be connected to the vehicle or the receptacle is connected to the at least one contact head.

For example, a ball joint can be latched into the receptacle. About the ball joint so rotational misalignments between the contact head and the

Docking device are compensated.

4

15

20

25

30

35

202110916

In this regard, an accurate fit of the ball joint in the socket is enabled when the socket

is formed in the shape of a segment of a sphere.

A variable support of the contact head is achieved when a length-adjustable guide device, via which the at least one contact head can be connected to the vehicle, is connected to the at least one contact head in an articulated and resilient manner.

This avoids the contact head remaining in a rotationally deflected position and a return of the contact head to an upright position

secured.

A preferred solution is obtained when the at least one contact head is connected to a linkage, via which the at least one contact head can be connected to the vehicle, to form a current collector.

In this context, a high flexibility of the power supply device according to the invention in the compensation of translational and / or rotational misalignments between the contact head and the docking device is then achieved when the at least one contact head relative to the

Linkage has at least three degrees of freedom of movement.

It is possible to compensate for misalignments between the contact head and the docking device in all three directions of rotation and all three directions of translation if the at least one contact head is connected to a linkage, via which the at least one contact head can be connected to the vehicle, to form a current collector, the at least one contact head relative to linkage six

Has degrees of freedom of movement.

The invention also relates to a vehicle with

a power supply device according to the invention.

5

Furthermore, the invention relates to a vehicle infrastructure (for example a charging station) with an inventive

power supply device.

6

15

20

25

30

35

202110916

The invention is based on

Examples explained in more detail. Examples show:

Fig. 1: A schematic side view of an exemplary first embodiment of a power supply device according to the invention with a first roller and a second roller on a front side of a contact head, which in a first

is in contact with a docking device,

Fig. 2: A schematic side view of the exemplary first embodiment variant of a power supply device according to the invention in one

second contact state,

3: A schematic side view of an exemplary second embodiment variant of a power supply device according to the invention with a first roller, a second roller, a third roller and a fourth roller on a front side of a contact head which contacts a docking device,

4: A schematic side view of an exemplary third embodiment variant of a power supply device according to the invention with a docking device whose inner contour is equipped with rollers,

Fig. 5: A schematic side view of an exemplary fourth embodiment of a power supply device according to the invention, with an underside of a contact head and with a

linkage a spring device is connected,

7

Fig. 6: A schematic plan view of the exemplary fourth embodiment variant of a power supply device according to the invention in section

Depiction,

Fig. 7: A schematic side view of an exemplary fifth embodiment variant of a power supply device according to the invention in a sectional view, with side surfaces of a

10 contact heads and one with a linkage

spring device is connected,

8: A schematic plan view of the exemplary fifth embodiment variant of a power supply device according to the invention in section

Depiction,

Fig. 9: A schematic side view of an exemplary sixth embodiment variant of a 20 power supply device according to the invention in a sectional representation, with a contact head having a ball joint and a spring device

is connected to a linkage,

25 Fig. 10: A schematic outline of the exemplary sixth embodiment variant of a power supply device according to the invention in

cut representation,

30 Fig. 11: A schematic side view of an exemplary seventh embodiment variant of a power supply device according to the invention in a sectional view, with a contact head via a ball joint and a linkage and via

35 a guiding device with a vehicle

is connected, and

8th

12: A schematic side view of exemplary embodiment variants of an electric vehicle and a vehicle infrastructure designed as a charging station with an exemplary embodiment variant of an inventive

power supply device.

9

15

20

25

30

35

202110916

Fig. 1 shows a schematic side view of an exemplary first embodiment variant of a power supply device according to the invention with a first roller 1 and a second roller 2 on a front side of a contact head 5 of the power supply device and two further, invisible rollers on a rear side of the contact head 5. The contact head 5 has a trapezoidal upper part, on the beveled surfaces four roles are arranged. The first roller 1 is arranged on a beveled first flank 6 of the contact head 5, the second roller 2 on a beveled second flank 7 of the contact head 5.

The first roll 1, the second roll 2 and the other rolls

are rotatably connected to the contact head 5.

These four rollers form a contact head rolling device 8, via which the contact head 5 mechanically contacts a stationary docking device 9, designed as a contact hood, of the power supply device in the first contact state shown in FIG. The docking device 9 is designed as a counterpart to the contact head 5 in the form of a hollow trapezium. A rolling contact is formed between the contact head 5 and the docking device 9 due to the contact head rolling device 8 , via which the contact head 5 can be introduced into the docking device 9 .

According to the invention it is also conceivable that the contact head rolling device 8, for example, from the front to

Back of the contact head 5 includes extending rollers.

Starting from the first contact state, the contact head 5 can be inserted or rolled further into the docking device 9 until a fit is formed between the trapezoidal upper part of the contact head 5 and the hollow trapezoidal docking device 9 . In this second contact state, which is shown in Fig. 2, is not visible contacts of the contact head 5 and the

10

15

20

25

30

35

202110916

Docking device 9 an electrical connection between the

Docking device 9 and the contact head 5 formed.

The contact head 5 is part of a charging current collector of a vehicle 10 designed as an electric bus and shown in FIG. 12 with accumulators as energy stores. As shown in FIG. 12 , the contact head 5 is connected to the vehicle 10 via a linkage 11 . The docking device 9 is part of a vehicle infrastructure 12 designed as a charging station, which is also shown in FIG.

In the second contact state, the batteries of the vehicle 10 due to the electrical connection between the contact head 5 and the docking device 9 via the

Vehicle infrastructure 12 charged.

FIG. 2 shows a schematic side view of that exemplary first embodiment variant of a power supply device according to the invention, which is also shown in FIG. The same reference numerals are therefore used in FIG. 2 as in FIG.

In contrast to FIG. 1, in which a first contact state between a contact head 5 and a docking device 9 is disclosed, FIG 9 is introduced. As a result, an electrical connection between the contact head 5 and the

Docking device 9 formed.

3 discloses a schematic side view of an exemplary second embodiment variant of a power supply device according to the invention, which is similar to that first embodiment variant of a power supply device according to the invention that is shown in FIGS. 1 and 2 . It is therefore partially the same in FIG

Reference numerals as used in Fig. 1 and Fig. 2.

11

15

20

25

30

35

202110916

In contrast to FIG. 1 and FIG. 2, the power supply device according to FIG fourth roller 4 and on a rear side of the contact head 5 another four rollers, which are not visible in Fig. 3, which

are rotatably connected to the contact head 5.

4 shows a schematic side view of an exemplary third embodiment variant of a power supply device according to the invention with a docking device 9 whose inner contour is equipped with rollers. These rollers are rotatably connected to the docking device 9 and form a docking rolling device 13, via which the docking device 9, for example, from a pantograph contact head of an electric vehicle, mechanically

and can be electrically contacted.

5 shows a schematic side view of an exemplary fourth embodiment variant of a power supply device according to the invention with a contact head 5 . The contact head 5 is structurally and functionally similar to that in the exemplary first embodiment variant of a power supply device according to the invention, which is shown in FIG. be brought into mechanical and electrical contact.

A first roller 1 of the contact head rolling device 8 is arranged in an upper area of a first flank 6 of the contact head 5, a second roller 2 of the contact head rolling device 8 in an upper area of a second flank 7 of the contact head 5.

12

15

20

25

30

35

202110916

With an underside of the contact head 5 and with a linkage 11 of a charging current collector of a vehicle 10, as shown in FIG 6 visible fourth spring 18, which are designed as coil springs.

The first spring 15, the second spring 16, the third spring 17 and the fourth spring 18 form a resilient four-point mounting of the contact head 5 on the linkage 11. Due to the spring device 14, the contact head 5 has three translational and three rotational degrees of freedom relative to the linkage 11 on. Movements of the contact head 5 are controlled by the spring device 14

resettable.

FIG. 6 shows a schematic plan view of that exemplary fourth embodiment variant of a power supply device according to the invention, which is also shown in FIG. 5, in a sectional representation.

A contact head 5 is connected via a spring device 14, which has a first spring 15, a second spring 16, a third spring 17 and a fourth spring 18, to a linkage 11 of a charging current collector. FIG. 6 shows a relative to the axis appearing to project in FIG

linkage 11 twisted state of the contact head 5.

The contact head 5 can be deflected translationally relative to the linkage 11 due to the spring device 14 in the image plane of FIG. 6 and perpendicular to the image plane. Furthermore, rotational deflections of the contact head 5 are relative to the linkage 11 about axes in the image plane and

around axes that appear projected in FIG. 6 are possible. In Fig. 7 is a schematic side elevation of a

exemplary fifth embodiment of a

power supply device according to the invention with a

13

15

20

25

30

35

202110916

Contact head 5 disclosed in a sectional representation. The contact head 5 is structurally and functionally similar to that exemplary first embodiment variant of a power supply device according to the invention, which is shown in Fig. 1, and can have a contact head rolling device 8 with a docking device 9, as shown for example in Fig. 1, in mechanical and electrical contact are made.

A first roller 1 of the contact head rolling device 8 is arranged in an upper area of a first flank 6 of the contact head 5, a second roller 2 of the contact head rolling device 8 in an upper area of a second flank 7 of the contact head 5.

A spring device 14 is arranged on the side of the contact head 5 and has a first spring 15, a second spring 16, a third spring 17 visible in FIG. 8 and a fourth spring 18 also visible in FIG.

The first spring 15, the second spring 16, the third spring 17 and the fourth spring 18 are coupled to side faces of a base plate 19 connected to the contact head 5 and are horizontal in the deflection state shown in FIG

aligned.

The spring device 14 is also connected to a linkage 11 of a charging current collector of a vehicle 10, as shown in FIG. 12 by way of example.

The first spring 15, the second spring 16, the third spring 17 and the fourth spring 18, which are designed as helical springs, form a four-point connection of the contact head 5 with the linkage 11.

Due to the spring device 14, the contact head 5 has three translational and three rotational degrees of freedom of movement relative to the linkage 11. Movements of the contact head 5 are controlled by the spring device 14

resettable.

14

15

20

25

30

35

202110916

FIG. 8 shows a schematic plan view of that exemplary fifth embodiment variant of a power supply device according to the invention, which is also shown in FIG. 7, in a sectional view.

A contact head 5 is connected via a spring device 14, which has a first spring 15, a second spring 16, a third spring 17 and a fourth spring 18, to a linkage 11 of a charging current collector. The contact head 5 is arranged on a square base plate 19 . The first spring 15 is connected to a first side surface 20 of the base plate 19, the second spring 16 to a second side surface 21 of the base plate 19, the third spring 17 to a third side surface 22 of the base plate 19 and the fourth spring 18 to a fourth side surface 23 the base plate 19.

FIG. 8 shows a state of the contact head 5 rotated about an axis that appears projected in FIG. 8 relative to the linkage 11.

The contact head 5 can be deflected translationally relative to the linkage 11 due to the spring device 14 in the image plane of FIG. 8 and perpendicular to the image plane. Furthermore, rotational deflections of the contact head 5 are relative to the linkage 11 about axes in the image plane and

around axes that appear projected in FIG. 8 are possible.

FIG. 9 shows a schematic side view of an exemplary sixth embodiment variant of a power supply device according to the invention in a sectional view.

The power supply device can be used in an electric vehicle 10, as shown for example in Fig. 12, and comprises a contact head 5. The contact head 5 can be inserted into a docking device 9 via a contact head rolling device 8, as shown for example in Fig. 1

is shown to be introduced.

15

15

20

25

30

35

202110916

A first roller 1 of the contact head rolling device 8 is arranged in an upper area of a first flank 6 of the contact head 5, a second roller 2 of the contact head rolling device 8 in an upper area of a second flank 7 of the contact head 5.

The contact head 5 is connected via a ball joint 24 and a spring device 14 to a linkage 11 of a charging current collector, as is disclosed in FIG. 12 by way of example.

The contact head 5 is arranged on a base plate 19 and connected thereto. On its underside, the base plate 19 has a receptacle 25, designed as a spherical segment-shaped recess, for the ball joint 24, into which the ball joint 24 is inserted.

The spring device 14, which comprises a first spring 15, a second spring 16 and, visible in FIG. 10, a third spring 17 and a fourth spring 18, is also arranged on the underside of the base plate 19. The first spring 15, the second spring 16, the third spring 17 and the fourth spring 18 are designed as coil springs. The first spring 15 is arranged to the left of the ball joint 24, the second spring 16 to the right of the ball joint 24. The third spring 17 is in front of the ball joint 24 and the fourth spring 18 is behind it

arranged.

The contact head 5 has three rotational degrees of freedom relative to the linkage 11 due to its connection to the linkage 11 via the base plate 19 and the ball joint 24 . The spring device 14 enables rotational deflections of the contact head 5 to be reset from the latter

neutral position.

Fig. 10 discloses a schematic floor plan of that exemplary sixth embodiment variant of a power supply device according to the invention, which is also in

9 is shown in section. It will

16

15

20

25

30

35

202110916

therefore in Fig. 10 partially the same reference numerals as in Fig.

9 used.

A contact head 5 visible in FIG. 9 is connected via a base plate 19, a ball joint 24 and a spring device 14, which comprises a first spring 15, a second spring 16, a third spring 17 and a fourth spring 18, to a linkage 11 of a charging current collector , as shown by way of example in FIG. 12.

In the deflection state shown in Fig. 10, the contact head 5 is relative to the linkage 11 by a distance shown in Fig.

10 twisted axis that appears pro]icing.

FIG. 11 shows a schematic side view of an exemplary seventh embodiment variant of a power supply device according to the invention in a sectional view, which is similar to that exemplary sixth embodiment variant of a power supply device according to the invention that is shown in FIG. 9 .

Therefore, in FIG. 11, some of the same reference numbers are used

as used in Figure 9.

In contrast to FIG. 9, a contact head 5 from FIG. 11 is not connected to a linkage 11 via a base plate 19 and a spring device 14, as shown by way of example in FIG.

Rather, the contact head 5 of FIG. 11 itself has a receptacle 25 designed as a spherical segment-shaped recess for a ball joint 24, into which the ball joint 24 is inserted

is.

The ball joint 24 is connected to the linkage 11, the linkage 11 with a roof of an electric vehicle 10. The contact head 5 is with the linkage 11 to one

pantograph connected.

17

15

20

25

30

35

202110916

Furthermore, a guide device 26 is connected to the contact head 5 by a ball joint and to the vehicle 10 by a ball joint. The guide device 26 comprises a rod-shaped first guide linkage 27 and a rod-shaped second guide linkage (not visible in FIG. 11 ).

The first guide linkage 27 is designed to be adjustable in length and has a first guide rod 28 and a second guide rod 29, which are designed to be displaceable relative to one another in the direction of a common longitudinal axis of the linkage. A return spring 30 of the guide device 26 is arranged between the first guide rod 28 and the second guide rod 29 of the first guide linkage 27 .

The second guide linkage is structurally the same as that

first guide linkage 27 running.

The guide device 26 supports the contact head 5 and, due to the return spring 30 , directs it according to rotational deflections, which are possible due to the ball joint 24

are, back up.

12 shows a schematic side view of exemplary embodiment variants of an electric vehicle 10 embodied as an electric bus and a vehicle infrastructure 12 embodied as a charging station with an exemplary embodiment variant of a power supply device according to the invention.

The power supply device includes a contact head 5, which is connected to a linkage 11 to a charging current collector. The linkage 11 is connected to a roof of the vehicle 10 .

The vehicle infrastructure 12 has a docking device 9 which is mechanically and mechanically connected to a charging station 31 of the vehicle infrastructure 12 that is supplied with electricity from a power grid

is electrically connected.

18

202110916

Batteries of the vehicle 10 are charged at a stop due to a mechanical and electrical connection between the contact head 5 and the docking device 9 . Charging current is transmitted from the docking device 9 via the contact head 5 and the linkage 11 into the accumulators.

The contact head 5 and the docking device 9 are as in

Executed as described in connection with FIG. According to the invention, it is also conceivable that the vehicle 10

not as an electric bus, but as an electric truck

etc. is trained.

19

15

20

25

30

202110916

List of designations

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

First roll

second role

third role

Fourth roller contact head

First flank

Second Flank Contact Head Roller Docking Device Vehicle

Linkage Vehicle Infrastructure Docking Rolling Device Spring Device

First feather

second spring

third feather

Fourth spring base plate

First face Second face Third face Fourth face Ball joint

Recording guide device First guide linkage First guide rod Second guide rod Return spring

charging station

20

Claims (16)

15 20 25 30 35 202110916 patent claims 1. Power supply device for a vehicle (10), in particular for a commercial vehicle such as an electric bus or an electric truck, with at least one contact head (5) which can be connected to a vehicle (10) and for forming an electrical connection with a stationary docking device (9) can be brought into contact, characterized in that a rolling contact can be formed between the at least one contact head (5) and the docking device (9). 2. Power supply device according to Claim 1, characterized in that a contact head rolling device (8) is rotatably connected to the at least one contact head (5) and can be brought into contact with the docking device (9), the contact head rolling device (8) having at least two Having roles or at least two rollers. 3. Power supply device according to claim 2, characterized in that a first roller (1) or a first roller is arranged on a first flank (6) of the at least one contact head (5) and a second roller (2) or a second roller on a the first flank (6) opposite second flank (7) of the at least one Contact head (5) is arranged. 4, power supply device according to one of claims 1 to 3, characterized in that with the docking device (9) a docking rolling device (13) with which the at least one contact head (5) can be brought into contact, rotatable connected is. 5. Power supply device according to one of claims 1 to 4, characterized in that the docking device (9) as a contact hood, in which the at least one contact head (5) is insertable, is formed. 21 15 20 25 30 35 202110916 6. 5, Power supply device according to one of claims 1 to characterized in that with the at least one Contact head (5) a spring device (14), via which the at least one contact head (5) with the vehicle (10) is connectable, is connected. 7. Power supply device according to claim 6, characterized characterized in that the spring device (14) with a Bottom or a top of at least one Contact head (5) is connected. 8th. Power supply device according to claim 6 or 7, characterized in that the spring device (14) laterally connected to the at least one contact head (5). is. 9th 8, Power supply device according to one of claims 1 to characterized in that the at least one Contact head (5) a receptacle (25) for a ball joint (24), via which the at least one contact head (5) with the Vehicle (10) is connectable, has or the receptacle (25) is connected to the at least one contact head (5). 10 Power supply device according to claim 9, characterized characterized in that the receptacle (25) has the shape of a segment of a sphere is trained. 11. Power supply device according to claim 9 or 10, characterized in that a length-adjustable Guide device (26) via which the at least one contact head (5) can be connected to the vehicle (10), articulated and resilient with the at least one contact head (5) connected is. 12. Power supply device according to one of Claims 1 to 11, characterized in that the at least one Contact head (5) with a linkage (11) through which the 22 15 20 202110916 at least one contact head (5) with the vehicle (10) is connectable, is connected to a pantograph. 13. Power supply device according to claim 12, characterized in that the at least one contact head (5) relative to the linkage (11) at least three Has degrees of freedom of movement. 14. Power supply device according to one of claims 1 to 8, characterized in that the at least one contact head (5) with a linkage (11) via which the at least one contact head (5) can be connected to the vehicle (10) to a current collector is connected, wherein the at least one contact head (5) relative to the linkage (11) has six degrees of freedom of movement. 15. Vehicle (10) with a power supply device any one of claims 1 to 14. 16 vehicle infrastructure (12) with a Power supply device according to one of Claims 1 to 14, 23